Sierra Wireless MP215 manual Power Supply Interface and On/Off Control, DB-9 Female

MP215 Mobile Modem Installation, Configuration, and User’s Guide

Figure 3-2 RS-232-C Voltage Specifications

+15 V

+5 V

-5 V

-15 V

RS-232-C

driver

Space

Logic 0

Transition

region

Mark

Logic 1

+15 V

+3 V

-3 V

-15 V

2 V noise margin

RS-232-C

receiver

Space

Logic 0

Transition

region

Mark

Logic 1

The MP215 is configured as a DCE (Data Communications Equipment) and the DB-9 connector uses the standard pin designations as shown in Figure 3.3.

Figure 3-3 Modem DB9 Pin Designation

Received Line		DB-9 Female
Signal Detect (DCD)	1		DCE Ready (DSR)
Transmitted Data
	6
(TXD)	2		Clear To Send (CTS)
	7
Received Data (RXD)		3
	8		Request To Send (RTS)
	4
DTE Ready (DTR)	9
Signal Ground (GND)	5		Ring Indicator (RI)

3.2. Power Supply Interface and On/Off Control

The power supply connector for the MP215 is a Molex Connector P/N: 39-29-

1048. The pin designation for the mating connector (Molex P/N: 39-01-2040 or

39-01-2045, pins Molex P/N: 39-00-0039) is given in Figure 3-3.

Sierra Wireless Inc. 05/11/99 3-2